Arlo vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Arlo Rank #146
Theodore Rank #4

Theodore is more popular, ranked #4 vs #146 for Arlo.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Arlo ___

  • Arlo James
  • Arlo Thomas
  • Arlo Bear
  • Arlo Fox
  • Arlo River
  • Arlo Blue

Theodore ___

  • Theodore James
  • Theodore William
  • Theodore Alexander
  • Theodore John
  • Theodore Henry
  • Theodore Arthur

Sibling Name Ideas

Names that pair well as siblings.

If you choose Arlo

Milo Isla Clover Finn Margot

If you choose Theodore

Olivia Charlotte Amelia Eleanor Oliver

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Arlo or Theodore more popular?

Theodore is more popular, ranked #4 compared to Arlo at #146 in the United States.

What do Arlo and Theodore mean?

Arlo means "fortified hill" (Old English origin). Theodore means "divine gift" (Greek origin).

Are Arlo and Theodore boy or girl names?

Arlo is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

Theodore vs Arlo Arlo vs Sebastian Arlo vs Lane Arlo vs Timothy Arlo vs Noah
← Full profile: Arlo ← Full profile: Theodore Browse all baby names